Details

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BUY DS1302ZN+T&R https://www.utsource.net/itm/p/12532628.html

Parameter	Description	Value/Range
Operating Voltage	Supply voltage range for Vcc	2.5V to 5.5V
I/O Voltage	Input/output voltage	Vcc - 0.1V to Vcc + 0.3V
Reset Pin Voltage	Voltage level on RST pin for operation	Vcc - 0.1V to Vcc + 0.3V
Clock Out Frequency	Frequency of the square wave output	1Hz, 4kHz, 8kHz, 32kHz
Write Current	Maximum current during write operations	100μA
Standby Current	Current consumption in standby mode	100nA (typical)
Operating Temperature	Temperature range for reliable operation	-40°C to +85°C
Package Type	Type of packaging	SO-8

Instructions for DS1302ZN+T&R

1. Power Supply Connection:

   • Connect Vcc to the power supply within the operating voltage range (2.5V to 5.5V).
   • Ground all GND pins.

2. Reset Pin Configuration:

   • Apply a logic high to the RST pin to enable communication with the DS1302.
   • Ensure that the RST pin is held low when not in use to prevent accidental data changes.

3. Data Communication:

   • Use the SCLK and I/O pins for serial data communication.
   • Data is transferred one bit at a time, synchronized by the falling edge of the SCLK signal.

4. Setting Time and Date:

   • Send commands via the I/O pin to set the real-time clock registers.
   • Time and date should be sent in BCD format.

5. Reading Time and Date:

   • Command the DS1302 to read the current time and date from its registers.
   • Data received will be in BCD format.

6. Clock Output Control:

   • Enable or disable the clock output (CLK OUT) using specific control bits.
   • Choose the desired frequency (1Hz, 4kHz, 8kHz, 32kHz) as needed.

7. Battery Backup:

   • For continuous timekeeping during main power loss, connect a backup battery to Vbat.
   • Ensure the backup battery voltage is within the operational range.

8. Handling and Storage:

   • Store in a dry environment within the specified temperature range.
   • Handle with care to avoid damage to the pins and internal components.

(For reference only)